多层住宅新型复合结构的固有频率计算分析  

The dynamic analysis of a new compound structural system for multi-storied residence building

作　　者：刘伟[1] 王仁义[1] 张念征[1] 

机构地区：[1]郑州大学土木工程学院,河南郑州450002

出　　处：《世界地震工程》2005年第3期131-134,共4页World Earthquake Engineering

基　　金：河南省自然科学基金资助项目(0411050900)新型住宅复合结构体系研究

摘　　要：对所提出的多层住宅新型复合结构体系进行了动力性能分析。在满足静力荷载作用下承载力要求的基础上,根据结构动力学原理,推导了该结构体系的动力特征方程,分析了复合结构体系的支撑截面和层数变化对动力特征的影响,计算显示,增加支撑对提高结构的频率即抗侧刚度有明显作用,且随支撑截面尺寸增大,固有频率单调增加。增加结构的层数固有频率减小,变化规律趋于收敛。根据动力特征方程计算的结构固有频率值,拟合了频率曲线,并推出了综合考虑支撑截面及结构层数影响的频率计算公式,和理论计算结果符合较好。In this paper, the dynamic behavior of a new compound structure of multi-story residence building is analyzed. Based on dynamics theory of structure, the equations of dynamic characteristics of the structural system are obtained. The effects of different brace areas and story numbers of the structural system on dynamics characteristics are analyzed. The calculated results show the action of the braces advances the frequencies and shear stiffness of the structure, and the frequencies are increased monotonously with adding of brace section, but are decreased with adding of storied numbers. According to the calculted frequencies, frequency curves are draw up, and a frequency formula considering the offects of the brace section and the storied numbers of the structure is obtained. The formula is simple and agreed with theory equation.

关 键 词：住宅体系 动力分析 支撑结构 

分 类 号：TU375[建筑科学—结构工程]